Device for removing waste yarn from bobbins



March 7 E950 E. c. Aux EEAL,

DEVICE FOR REMOVING WASTE YARN FROM BOBBINS Filed Aug. 12, 1947 2 Sheets-Sheet l INVENTOR. ELMER c. Aux nmzzv A. wu so- ATTORNEY March 395% E. Q. ALIX ET AL E FOR REMOVING WASTE YARN FROM BOBBINS DEVIC 2 Sheets-Sheet 2 Filed Aug. 1.2, 1947 INVENTOR. ELMER c. Aux

HARRY A. WILSON ATTORNEY Patented Mar. 7, 1950 2,499,810 DEVICE FOR REMOVING WASTE YARN FROM BOBBIN S Elmer 0. Am, Charlton City,

Wilson, South Spencer,

and Harry A.

Mass.

Application August 12, 1947, Serial No. 768,208

a Claims. 2

This invention relates to a device for removing the filling or yarn which remains adjacent the heads of bobbins which have been ejected from the shuttles of automatic type looms and has particular reference to novel means and method of making the same.

One of the principal objects of the invention is to provide a device beneath the lay of looms on the magazine side thereof, for receiving bobbins during the transfer thereof from the shuttles and for removing the remaining yarn or filling therefrom.

Another object is to provide a device of the above character embodying a funnel for receiving the bobbins during the bobbin transfer and arranged so that the loose ends of the filling or yarn remaining adjacent the heads of said bobbins will be directed between two revolving ejector rollers for causing the filling or yarn to be unwound from the bobbins and which will automatically direct the bobbins into a suitable receptacle.

Another object is to provide a device of the above character which may be operated by a separate source of power or which may be connected with an operating part of the loom as its source of power.

Other objects and advantages of the invention will become apparent from the following description taken in connection with the accompanying drawings and it will be apparent that many changes may be made in the details of construction, arrangement of parts and method shown and described without departing from the spirit of the invention as expressed in the accompanying claims. We, therefore, do not wish to be limited to the exact details of construction, arrangement of parts and method shown and described as the preferred form only has been given by way of illustration.

Referring to the drawings:

Fig. i is a front elevational view of the device embodying the invention;

Fig. 2 is a side elevation of said device shown partly in section; and

Fig. 3 is a sectional view taken as on line 33 of Fig. 2.

The invention is directed to the provision of a device, which is positioned beneath the lay of looms on the magazine side thereof, adapted to receive bobbins as they are ejected from the shuttles when the major portion of the filling or yarn is spent from said bobbins and so constructed as to cause the filling or yarn remaining on the bobvided with a resilient finger l2 whose bins to be unwound therefrom so that the said bobbins will then be ready for re-use.

Referring to Figs. 1, 2 and 3 of the drawings where like characters of reference designate like parts throughout the several .views, the device comprises a main support 9 which is attached to the loom frame by means of a suitable bracket not shown and is preferably attached beneath the lay of the loom on the magazine side thereof. The support 9 has a chute In which is adapted to receive the bobbins II as they are ejected from the shuttle in the conventional manner, particularly from automatic type looms. The chute It is profunction will be described more in detail hereinafter. If a bobbin from which the yarn has been spent is ejected from the shuttle, it is forced transversely of the resilient finger I 2 into the chute i ll as diagrammatically illustrated in Fig. 2. The front of the chute is provided with a slot or channel it formed by deflecting the side edges of the front of the chute forwardly as illustrated at 15 and by allowinga space therebetween as illustrated best in Fig. 1. This slot M directs the loose end It of the filling or yarn on the ejected bobbin downwardly between the cone-shaped ends it of contiguously related resilient supported cylindrical rollers IT. The ollers I! are preferably formed with a metal casing having a core Iii of resilient material therein. The cores are formed of any suitable resilient material such as rubber, synthetic rubber or the like or may be any other desirable suitable resilient material which will retain the engaging inner walls IQ of the rollers in yielding contact with each other. The cores It are supported by central posts or shafts 20 which, as shown in Fig. 2, each extend through a bearing 28 in the main support 9 and in turn extend through a bearing 24 in the lower wall 22 of the housing 23. These bearings 23 and 26 may be any desirable or suitable type known in the art such as bronze or may be ball bearings or the like. Each of the shafts, immediately beneath the main support 9, is provided with a gear 25. The said gears 25 are in permanent mesh with each other and adaptedto simultaneously rotate the rollers I! through the connection of one of said shafts with a. flexible drive shaft or the like 26. A suitable coupling 21 is provided for this purpose. The flexible drive shaft 26 may be connected to any suitable source of power. It, for example, may be driven by a separate motor or through a suitable operating part of the loom.

The cores l8 extend outwardly of the upper end of the rollers I! to form the tapered portions trolled to unwind 3 It and the shafts Ilextend outwardly of mid portions II, as shown in ll, to completethe cone point, see particularly Figs. 1 and 2. The partions II tend to provide an additional frictimal gripping means for guiding the loose end it downwardly between the rollers II. This may be due to greater adhesion due to the particular characteristics of the resilient material or to electro-static attraction. It does, however,

tively between the engaging inner side surfaces ll of the rollers. The rollers I! are preferably driven in the direction indicated by the arrows 2!, that is, they both rotate toward each other in an outward direction with respect to the chute II. The speed of rotation of the rollers is conthe filling or yarn without thereof and yet is such as to filling or yarn from one bobnext bobbin durdanger of breakage entirely remove the bin prior to the ejection of the ing the next successive transfer. The lower end of the chute III is provided with a shelf 30 which is angled slightly in a downward direction. The shelf functions to prevent or retard the direct passa e of the transferred and yet it has its outer edge ll spaced sumciently from the inner side wall 32 of the chute to subsequently allow the head of the bobbin to pass therethrough. This permits the bobbin to fall outwardly of the chute under the action of gravity. It is particularly pointed out that the shelf 30 is carefully located at a distance below the lay of the loom suflicient to insure that the end 13 of the yarn or filling will not be drawn back into the cloth. Its distance, therefore, below the lay of the loom, is such that when the end of the filling or yarn I3 is cut in the conventional manner, the bobbin will be at a distance sufliciently below the lay as to prevent said loose end from being drawn back into the cloth and will further insure that the said end I: is drawn downwardly into the chute and directed by the channel or slot i4 downwardly between the rotating cylinders or rollers II.

The cylinders or rollers I'I function to resiliently grip the loose end of the filling it therebetween and cause said filling to be drawn from the bobbin.

To prevent the filling or yarn I! from becoming wound around the ejector rollers ll, there is provided one or more sets of scrapers or the like 33 and 34. These may be in the form of separate meta c blades havin their respective free edges 35 and 3S frictionally e the side walls of the cylinders II. If desired, the said blades may be formed of resilient material for resiliently retaining said free edges in contact with the side walls of the cylinders.

If desired, instead of forming the scrapers separately and independently from each other,

single scraper elements may be made in the form of blocks having their engaging areas shaped to the contour shape of the adjacent side surfaces of the cylinders with which they engage, which areas could extend throughout the surface intermediate the edges 35 and 36 or might be formed to take in half of the circumferential dimension of the rollers.

To further insure the complete unwinding of the filling or yarn from the bobbins and to prevent clogging of the rollers, there is provided an inner guide blade 31 having a slot therein as shown at 38. The slot is provided with a mouth portion in the form of a V communicating with a channel having spaced substantially bobbin therethrough when being parallel vertically disposed walls II. As theyarn orfillingisbeing drawnfromthehobbinbythe ejector rollers, the said yarn will automatically position itself inwardly of the spaced walls I! of thechannelandthesaidchannelwillimravel twistingsinthefillingoryarnandwillthereby more positively insure the withdrawal of the yarn from the bobbin.

The spaced parallel walls I! of the channel also function to prevent any stray yarn from being drawn outwardly between the ejector rollers, that is, if there should be a hunching of the yarn, theparallelwalls Ilaresospacedastodefleet excessive yarn and function as a conditioner for insuringonlyadesiredamountofyarntobe drawn outwardly between the ejector rollers.

It has been found that when changing bobbins, that is, when the end of the filling from the elected bobbin is being out free from the cloth at the start of the new bobbin, and the end of the filling of the new bobbin in the shuttle is being cut in the conventional manner, that some stray pieces of yarn may drop across the top of the chute and the resilient finger l2, previously mentioned above and which is carried by the top of the rear wall of the chute, functions as shunt means for preventing said stray yarn from falling inwardly of the chute. The resilient finger I2 is angled in a downward direction, as shown best in Fig. 2, so that the stray yarn falling thereon will slide downwardly thereof under the action of gravity clear the chute. Directly in front of the ejector rollers and secured to the housing 23 by means of suitable brackets or the like ll and ll. there is provided a chute member 42 which is adapted to receive the filling or yarn drawn from the bobbin by the ejector rollers and is adapted to guide said yarn into a suitable receptacle.

From the foregoing description, it will be seen that simple, efficient and economical means and method have been provided for accomplishing all of the objects and advantages of the invention.

Having described our invention, we claim:

1. A device for removing residue yarn from a bobbin comprising the combination of a receptacle for receiving the bobbin when ejected by a loom, said receptacle having a vertically disposed guide channel in a side wall thereof with the upper end edges of the channel portion being in divergent relation with each other for receiving and directing the yarn trailing from the ejected bobbin inwardly of said channel, a pair of roller members positioned adjacent said receptacle and having vertically engaging surfaces positioned adjacent and substantially parallel with said guide channel and between which the yarn disposed in said guide channel is adapted to be directed and means for rotating said roller members in a direction such as to cause the yarn to be withdrawn from the bobbin through said guide channel.

2. A device for removing residue yarn from a bobbin comprising the combination of a receptacle positioned to receive a bobbin therein when ejected by a loom, said receptacle being so formed as to have a vertically disposed guide channel in a side wall thereof with the mouth of the channel having diverging edges for receiving the yarn trailing from the bobbin, a pair of roller members positioned externally of and adjacent the receptacle and having vertically enga surfaces positioned adjacent and substantially parallel with said guide channel, said roller members having free upper end portions with surfaces in diverging relation with each other for receiving the yarn directed therebetween by the guide channel and means for rotating said roller members in a direction so as to cause the yarn to be withdrawn from the bobbin through said guide channel.

3. A device for removing residue yarn from a bobbin comprising the combination of a recep tacle positioned to receive a bobbin therein when ejected by a loom, said receptacle being so formed as to have a vertically disposed guide channel in a side wall thereof with the mouth of the channel having diverging edges for receiving the yarn trailing from the bobbin, a pair of roller members positioned externally of and adjacent the receptacle and having vertically engaging surfaces positloned adjacent and substantially parallel with said guide channel, said roller members having free upper end portions with surfaces in diverging relation with each other for receiving the yarn directed therebetween by the guide channel and means for rotating said roller members in a direction so as to cause the yarn to be withdrawn from the bobbin through said guide channel, said roller members comprising a central shaft portion and a cylindrical metallic portion supported in spaced attached relation with the shaft by a resilient liner with the exposed free upper portions with surfaces in divergent relation with each other extending outwardly of the cylindrical members and being formed of said resilient material.

4. A device for removing residue yarn from a bobbin comprising the combination of a receptacle positioned to receive the bobbin when ejected by a loom, said receptacle being so formed as to provide a'vertically disposed channel in a side wall thereof with a mouth portion having edge portions in divergent relation with each other for receiving the yarn trailing from the bobbin and directing said yarn inwardly of the channel, said receptacle embodying means for retarding the passage of the bobbin therethrough when ejected by the loom, a pair of roller members positioned adjacent said receptacle and having vertically engaging side surfaces positioned adjacent and substantially parallel with said guide channel, said roller members having relatively resilient free upper end portions tapering upwardly and outwardly with respect to said engaging surfaces for receiving therebetween the yarn disposed in said guide channel and means for rotating said roller members in a direction such as to cause the yarn to be withdrawn from the bobbin through said guide channel.

5. A device for removing residue yarn from a bobbin comprising the combination of a receptacle positioned to receive the bobbin when ejected by a loom, said receptacle being so formed as to provide a vertically disposed channel in a side wall thereof with a mouth portion having edge portions in divergent relation with each other for receiving the yarn trailing from the bobbin and directing said yarn inwardly of the channel, said receptacle embodying means for retarding the passage of the bobbin therethrough when ejected by the loom, a pair of roller members positioned adjacent said receptacle and having vertically engaging side surfaces positioned adjacent and substantially parallel with said guide channel, said roller members having relatively resilient free upper end portions tapering upwardly and outwardly with respect to said engaging surfaces for receiving therebetween the yarn disposed in said guide channel, means for rotating said roller members in a direction such as to cause the yarn to be withdrawn from the bobbin through said guide channel, and means positioned adjacent the roller members on the side thereof opposite the guide channel having longitudinal edge portions in substantially side surface contact with the side surfaces of said roller members.

ELMER. C. ALIX. HARRY A. WILSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Numberv Name Date 866,364 Hutchins Sept, 17, 1907 1,594,958 Howie Apr. 3, 1926 2,023,515 Chatfleld Dec. 10, 1935 2,307,666 Clough et a1 Jan. 5, 1943 

